We've had two mapping parties in the last two weeks (awesome). Our focus was to help with the Lesotho mapathon, unfortunately at the first mapping party we were having issues with our Chrome browsers crashing when using the HOT Task Manager (didn't think to try Firefox @ the time). Our last mapping party we were rocking with edits. We had three local folks fueled up on late night coffees in Westboro working on edits. We focused primarily in the urban areas.
I think the default grids that the HOT Tasking Manager provides is too much space to map. I'm a fan of the option to split the large grid into four squares. This is much more manageable.
I would really love for iD to have the ability like the JOSM Building plugin, I've filed an issue for this but can't find the link at the moment. This would be awesome, since it's so easy for new mappers to get going with iD.
We're throwing another mapping party/hangout tomorrow night (Friday Aug 1), I'll definitely be doing a bit more mapping for Lesotho.